Patents by Inventor Miwa Ogawa

Miwa Ogawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220262577
    Abstract: A cathode foil for electrolytic capacitors includes a metal porous part, a metal core part that is continuous with the metal porous part, and a coating film covering the metal porous part. Pores in the metal porous part are open at a first main surface of the cathode foil. The coating film is disposed in a region from the first main surface to a depth more than or equal to 10% of a thickness of the metal porous part in a thickness direction of the metal porous part.
    Type: Application
    Filed: May 2, 2022
    Publication date: August 18, 2022
    Inventors: Mitsuhisa YOSHIMURA, Miwa OGAWA, Natsuyo SASADA, Tatsuji AOYAMA
  • Publication number: 20220148815
    Abstract: An electrode foil for an electrolytic capacitor including a metal porous portion, and a metal core portion continuous to the metal porous portion. When the metal porous portion is equally divided in three in a thickness direction of the metal porous portion into a first region, a second region, and a third region sequentially from the metal core portion side, the first region has a porosity P1, the second region has a porosity P2, and the third region has a porosity P3, satisfying P1<P2<P3.
    Type: Application
    Filed: October 30, 2019
    Publication date: May 12, 2022
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Mitsuhisa YOSHIMURA, Shosuke NAKANO, Hiroshi YOSHIDA, Masami TSUBAKI, Naomi KURIHARA, Miwa OGAWA
  • Publication number: 20220115185
    Abstract: A film production method for producing a layer containing a metal oxide, the film production method including: a heating step of heating a metal foil containing a first metal by bringing a part of the metal foil into contact with at least one heat generator; a first contact step of letting first gas containing a second metal to be in contact with both surfaces of the metal foil in a state where the part of the metal foil is supported; and a second contact step of letting second gas containing an oxidant to be in contact with the both surfaces of the metal foil in a state where the part of the metal foil is supported.
    Type: Application
    Filed: February 19, 2020
    Publication date: April 14, 2022
    Inventors: NAOMI KURIHARA, AKIHIRO YAMAGUCHI, MITSUHISA YOSHIMURA, MIWA OGAWA
  • Patent number: 11222753
    Abstract: An electrode includes a core portion including a first metal, and a porous portion disposed in contact with the core portion. The porous portion includes a porous body, a first dielectric layer, and a second dielectric layer. The porous body is integrated with the core portion and includes the first metal. The first dielectric layer covers at least a part of a surface of the porous body. And the second dielectric layer covers at least a part of the first dielectric layer. The first dielectric layer includes oxide of first metal, and the second dielectric layer includes oxide of a second metal. The second metal is different from the first metal. When T is a thickness of the porous portion, the second metal is distributed to a region closer to the core portion than a position of 0.5T from a boundary between the core portion and the porous portion.
    Type: Grant
    Filed: September 2, 2019
    Date of Patent: January 11, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Miwa Ogawa, Naomi Kurihara
  • Publication number: 20210366660
    Abstract: An electrode foil for an electrolytic capacitor includes an anode body foil having a porous part, and a dielectric layer covering a surface of a metal framework constituting the porous part. The dielectric layer includes a first layer containing an oxide of a second metal, the second metal being different from a first metal contained in the metal framework. An underlayer that is continuous with the first layer is provided between the metal framework and the first layer. The underlayer contains phosphorus and carbon.
    Type: Application
    Filed: August 6, 2021
    Publication date: November 25, 2021
    Inventors: MIWA OGAWA, NAOMI KURIHARA, MITSUHISA YOSHIMURA
  • Publication number: 20210366661
    Abstract: An electrode foil for an electrolytic capacitor includes a metal foil having a porous part, and a dielectric layer covering a surface of a metal framework constituting the porous part. The dielectric layer includes a first layer containing an oxide of a second metal different from a first metal contained in the metal framework. The first layer has a thickness T1. The first layer contains at least one kind of additive element selected from the group consisting of carbon, phosphorus, boron, and nitrogen. The first layer includes a first region from an outer surface of the first layer to a center of the first layer in a thickness direction, and a second region from the center to an inner surface of the first layer. A content of the at least one kind of additive element in the second region is greater than a content of the at least one kind of additive element in the first region.
    Type: Application
    Filed: August 9, 2021
    Publication date: November 25, 2021
    Inventors: MITSUHISA YOSHIMURA, NAOMI KURIHARA, MIWA OGAWA, YASUHIRO TSUDA
  • Publication number: 20200373090
    Abstract: An electrode foil for an electrolytic capacitor includes an anode electrode body including a base material part having a porous body portion, and a dielectric layer disposed on a surface of the porous body portion. The anode electrode body has a first main surface in which pores of the porous body portion are opened, a second main surface opposite to the first main surface, and an end surface connecting the first main surface and the second main surface. In the porous body portion, a first film thickness of the dielectric layer in an end surface vicinity region is larger than a second film thickness of the dielectric layer in a deep inner region, the end surface vicinity region being a region within a predetermined distance from the end surface, the deep inner region being a region located away from the first main surface and at a central portion in a direction parallel to the first main surface.
    Type: Application
    Filed: August 4, 2020
    Publication date: November 26, 2020
    Inventors: MITSUHISA YOSHIMURA, TATSUJI AOYAMA, NAOMI KURIHARA, MIWA OGAWA
  • Patent number: 10804039
    Abstract: An electrolytic capacitor has an electrode foil that includes a metal foil containing a first metal, a first dielectric layer disposed on the metal foil, and a second dielectric layer disposed on the first dielectric layer. A method for manufacturing the electrolytic capacitor includes subjecting a roughening treatment to the metal foil and forming the second dielectric layer on a roughened surface of the metal foil by an atomic layer deposition method. The second dielectric layer contains an oxide of a second metal. The method further includes forming the first dielectric layer containing an oxide of the first metal between the metal foil and the second dielectric layer by subjecting the metal foil to an anodization treatment.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: October 13, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Miwa Ogawa, Ayumi Kochi, Yasuhiro Tsuda
  • Publication number: 20200006011
    Abstract: An electrode includes a core portion including a first metal, and a porous portion disposed in contact with the core portion. The porous portion includes a porous body, a first dielectric layer, and a second dielectric layer. The porous body is integrated with the core portion and includes the first metal. The first dielectric layer covers at least a part of a surface of the porous body. And the second dielectric layer covers at least a part of the first dielectric layer. The first dielectric layer includes oxide of first metal, and the second dielectric layer includes oxide of a second metal. The second metal is different from the first metal. When T is a thickness of the porous portion, the second metal is distributed to a region closer to the core portion than a position of 0.5T from a boundary between the core portion and the porous portion.
    Type: Application
    Filed: September 2, 2019
    Publication date: January 2, 2020
    Inventors: MIWA OGAWA, NAOMI KURIHARA
  • Publication number: 20180358181
    Abstract: An electrolytic capacitor has an electrode foil that includes a metal foil containing a first metal, a first dielectric layer disposed on the metal foil, and a second dielectric layer disposed on the first dielectric layer. A method for manufacturing the electrolytic capacitor includes subjecting a roughening treatment to the metal foil and forming the second dielectric layer on a roughened surface of the metal foil by an atomic layer deposition method. The second dielectric layer contains an oxide of a second metal. The method further includes forming the first dielectric layer containing an oxide of the first metal between the metal foil and the second dielectric layer by subjecting the metal foil to an anodization treatment.
    Type: Application
    Filed: August 21, 2018
    Publication date: December 13, 2018
    Inventors: MIWA OGAWA, AYUMI KOCHI, YASUHIRO TSUDA
  • Patent number: 8422201
    Abstract: A solid electrolytic capacitor comprising an anode composed of a valve metal or its alloy, a dielectric layer formed on a surface of the anode, a coupling agent layer formed by subjecting the dielectric layer to a surface treatment with a coupling agent having a phosphonic acid group, a conductive polymer layer formed on the coupling agent layer, and a cathode layer formed on the conductive polymer layer.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: April 16, 2013
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Gaku Harada, Takeshi Sano, Miwa Ogawa
  • Publication number: 20130070385
    Abstract: A stacked structure includes: first and second electrode parts, and a dielectric layer. The first electrode part has a first strip portion and a plurality of first plate portions extending from a side edge of the first strip portion. The second electrode part has a second strip portion and a plurality of second plate portions extending from a side edge of the second strip portion. The first and second electrode parts are arranged such that the first and second plate portions are stacked. The first plate portions face the second plate portions and the second strip portion. The second plate portions face the first plate portions and the first strip portion. The dielectric layer is placed between the first plate portions and adjacent ones of the second plate portions, between the first plate portions and the second strip portion, and between the second plate portions and the first strip portion.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 21, 2013
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Gaku Harada, Miwa Ogawa, Kaori Ishikawa
  • Publication number: 20100193745
    Abstract: A conductive polymer film obtained by using a polymerization liquid containing a monomer for a conductive polymer, an oxidizing agent, and an additive having a phosphonic acid group and an organic group or a polymerization liquid containing a monomer for a conductive polymer, an oxidizing agent, a basic first additive, and an acidic second additive to polymerize the monomer for the conductive polymer on a substrate, and an electronic device using the conductive polymer film.
    Type: Application
    Filed: January 27, 2010
    Publication date: August 5, 2010
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Gaku HARADA, Takeshi SANO, Miwa OGAWA, Makoto SHIRAKAWA
  • Publication number: 20100079928
    Abstract: A solid electrolytic capacitor comprising an anode composed of a valve metal or its alloy, a dielectric layer formed on a surface of the anode, a coupling agent layer formed by subjecting the dielectric layer to a surface treatment with a coupling agent having a phosphonic acid group, a conductive polymer layer formed on the coupling agent layer, and a cathode layer formed on the conductive polymer layer.
    Type: Application
    Filed: September 23, 2009
    Publication date: April 1, 2010
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Gaku Harada, Takeshi Sano, Miwa Ogawa
  • Publication number: 20040233142
    Abstract: An operation point voltage signal and a current video signal are received and stored in a video data processor circuit and a current signal is output onto a data line for a period of one horizontal line. A current-driven pixel circuit can be driven by an operation point voltage signal and a current video signal.
    Type: Application
    Filed: April 27, 2004
    Publication date: November 25, 2004
    Inventors: Shoichiro Matsumoto, Miwa Ogawa
  • Publication number: 20040096899
    Abstract: It is made possible to quantify MT1-MMP and to measure the enzymatic activity of MT1-MMP sensitively, accurately and quickly with simple operations and reagents. The MT1-MMP quantifications and the MT1-MMP enzymatic activity measurements can be carried out using quantitative immunoassays for MT1-MMP with anti-MT1-MMP Ab and reagents used therefor, further immunologically quantifying methods for a member selected from (i) MT1-MMP released and/or solubilized from cell membrane with a surfactant and/or a reducing agent and (ii) spontaneously solubilized MT1-MMP, reagents used therefor, solid-phased MT1-MMP, etc., thereby enabling the screening for a compound which promotes or inhibits the expression of MT1-MMP or a compound which promotes or inhibits the enzymatic activity of MT1-MMP, and facilitating the development and research for valuable pharmaceutical drugs. There are also provided a useful testing drug for cancer or cancer metastasis.
    Type: Application
    Filed: October 27, 2003
    Publication date: May 20, 2004
    Inventors: Takanori Aoki, Kayoko Yonezawa, Noboru Fujimoto, Miwa Ogawa, Kazushi Iwata